/Engine/Plugins/Interchange/Runtime/Source/Pipelines/Public/InterchangeGenericMeshPipeline.h
FNameorFStringproperties can have a dynamic set of possible values. When displaying a pipeline property in the property editor, this function will be call for allFStringandFNameproperties and will generate a combo box with the PossibleValues if the function return true.
virtual bool GetPropertyPossibleValues ( const [FName](API\Runtime\Core\UObject\FName) PropertyPath, [TArray](API\Runtime\Core\Containers\TArray)< [FString](API\Runtime\Core\Containers\FString) > & PossibleValues )